There is an okapi in Magic that's an antelope, and frankly, this kind of incorrect reflection/choice is unacceptable, especially when dog, wolf, and coyote are all separated (but somehow raccoon dogs, which are more closely related to foxes, end up as dogs). Ignorance of the audience shouldn't be an excuse, especially since these are almost never have in-game mechanical tribal relevance. And, for Dogs and Wolves, would tribal relevance between the two even be a gameplay problem?

From my understanding, among the ruminant branches, the pecora infraorder splits into two brances, one branch having giraffidae and the pronghorn, with the other branch having deer and another branch that splits into bovidae (which would include animals called antelope) and a branch for musk deer.

I like that the flash matters here a little extra.

I commented before that it's weird that "quick" includes "enters the battlefield tapped", but this time I come up with a fix: Use a term that means not just "fast", but "fast but sloppy"/"acted before thought"/"in a hurry" e. g. "rushed"/"rash"/"madcap" etc.

> Tatterkite's ability evades Nihiita's, but unless Tatterkite and Nihiita were the only creatures on the battlefield, the reflex should still trigger.

How come? You failed to put a counter on each other creature since there is one other counter you didn't put a counter on. I think you have to write out what you want the condition to be rather than write "do" e. g. (for what you seem to want) "When you put one or more counters creatures this way".

If nothing else, it removes ambiguity.

I think the trigger would still work, though I admit I am not super-knowledgable with the rules here. Nihiita, Lord of Consumption puts the counter on each other creature. Tatterkite's ability evades Nihiita's, but unless Tatterkite and Nihiita were the only creatures on the battlefield, the reflex should still trigger. I would also think, with the current wording, so long as a creature gains a counter from Nihiita's ability, the reflex will trigger and still count any creatures that died in other ways (if this is an issue, could wording be changed to "creatures that died this way" instead?).

Now that I look at it, I notice an issue: If your opponent controls Tatterkite, will the reflexive trigger work? I'd guess, no. I don't know whether that's an issue with you.

­Gadrak, the Crown-Scourge puts it at a lower cost than I expected, especially considering that you get it permanently on a big flying defender that eventually will attack.

And this is almost strictly weaker.

I also have to consider that you could get nothing out of it, if you have no artifact cards in your graveyard.

The difference between a possibly expensive artifact for free and a Gold token is just so big.

As another reference, you could compare Gold to 2/2 tokens on Rise of the Dread Marn.

Is there a reference?

How much would "Create a Gold token for each creature that has died this turn" cost?

It's a very big cactus. I never really included what Maxemarc Ghoulbark was doing on Alxzarza as Ghoulbark, Cactus Botanist, but he was studying cacti as he continues to look for treatments for his undescribed genetic disorder.